The generator matrix

 1  0  0  0  1  1  1  1  1  1  1  1  1  1  1  X  1  1  1  0  1  1  1  X  1  1  1  X 2X  1  1  1  0  1  1  X 2X  1 2X 2X  1  1  1  1  0  X  1  1  1  X 2X  1 2X  0  1  X  1  X  1  1  1  1  1 2X  1  1  1  1  0  1  1  0  X 2X  1
 0  1  0  0 2X  0  X  X 2X 2X 2X 2X 2X+1  1 X+2  1 2X+1 X+2 2X+2  1 X+1 2X+1  2  1  2  1  2  1  1 X+2  2 X+1  1  1 X+2  1  1 2X+1  X  1  X  X 2X+1 X+1  1  0  0  0  X  X  1 X+1  1 2X  2  1 X+1  1  0  2 2X+2  X  X 2X 2X+1  2  1  1  X  X 2X+2  1  1  1  2
 0  0  1  0  0  X 2X+1  2 2X+1  2 X+1 X+2 2X+2  2 2X+2  X  2 X+2 X+2 2X+2 X+1 2X  1  2 2X  1 2X+1 2X X+1 2X  X  X X+1 X+2  1  1  2  0  1 2X 2X  0 X+1  0  X  1  0 X+1 X+2  1 2X+1 2X 2X+2  X 2X+2 X+2 X+1 X+1 2X+2 2X+1 2X+2  X  1  1 2X  0 2X+1  2  0 2X+1  0 X+2 2X+1 2X+1 X+1
 0  0  0  1 2X+1 2X+2 2X+1  1 2X+2  0  X  2 X+2 X+1 X+1 2X+2 2X X+2  0 X+2 2X  X  1 2X+1 X+2  2  2 X+1 X+1  0 2X+1 X+1 2X  X  0 X+2  X  2  2  0 2X+2 2X  1  1 2X+2  X X+1  0  X X+1 2X+2  X 2X+1  1 X+1 2X 2X+1  2 X+2 2X+1 2X+1 X+2 2X X+1 X+2 2X+2 2X  2  1 2X+2 2X  X X+2 2X+1  X

generates a code of length 75 over Z3[X]/(X^2) who´s minimum homogenous weight is 140.

Homogenous weight enumerator: w(x)=1x^0+324x^140+300x^141+630x^143+390x^144+864x^146+406x^147+798x^149+276x^150+546x^152+194x^153+468x^155+268x^156+294x^158+150x^159+216x^161+88x^162+132x^164+82x^165+60x^167+30x^168+30x^170+2x^171+12x^173

The gray image is a linear code over GF(3) with n=225, k=8 and d=140.
This code was found by Heurico 1.16 in 0.938 seconds.